Par? 2, 1908] POLYPORACEAE 115 
5. Elfvingia tornata (Pers.) Murrill, Bull. Torrey 
Club 30: 301. 1903. 
Polyporus lornatus Pers.; Gaud. Voy. Freyc. Bot. 173. 1826. 
Polyporus australis Fries, Elench. Fung. 108. 1828. (Type from islands in the Pacific Ocean.) 
Polyporus Oerstedii Fries, Nov. Symb. 63. 1851. (Type from the island of St. John, West Indies.) 
Fomes australis Cooke, Grevillea 14: 18. 1885. 
Ganoderma ausirale Pat. Bull. Soc. Myc. Fr. 5; 71. 1889. 
Pileus hard, woody, dimidiate, sessile or spuriously stipitate, applanate, thin, very 
large, plane below, 10-20 * 15-30 x 1-5 cm.; surface horny-encrusted, sulcate, glabrous, 
slightly tuberculose, conidia-bearing, opaque to subshining, often fasciate with black bands, 
subspadiceous to fulvous; margin smooth, sterile, often laccate, subacute, often becoming 
truncate : context floccose with harder fibers, zonate, fulvous to bay, with whitish markings 
in old specimens, 5-10 mm. thick, very thin in large specimens; tubes indistinctly strati- 
fied, 5-8 mm. long each season, not separated by layers-of context, dark-umbrinous within, 
mouths circular, not stuffed when young, often covered near the margin with resin, 4 toa 
mm., edges obtuse to acute, entire, pallid to umbrinous: spores broadly ellipsoid, trun- 
cate, very dark yellowish-brown, abundantly and roughly echinulate, 5-6 X 7-8 z. 
TYPE LOCALITY: Islands in the Pacific ocean. 
HaBItTaT: Dead trunks and stumps of various trees. 
DISTRIBUTION : Abundant and widely distributed in tropical America ; also i in tropical Asia. 
6. Elfvingia Lionnetii (Rolland) Murrill, Bull. Torrey 
Club 30: 301. 1903. 
Ganoderma Lionnetit Rolland, Bull. Soc. Myc. Fr. 17: 180. 1901. 
Pileus woody, thin, applanate, 8-12 15-20 1-3 cm.; surface horny-encrusted, pro- 
foundly radiate-rugose, zonate-fasciate, tuberculose, spadiceous-umbrinous to fuliginous ; 
margin pallid, sterile, undulate, obtuse, reddish-brown when bruised: context floccose, 
hard, tawny-bay, 3-5 mm. thick ; tubes indistinctly stratified, 6-10 mm. long each season, 
not separated by layers of context, chestnut-colored within, umbrinous-tinted, especially in 
the older layers, mouths circular to polygonal, whitish-stuffed when young, 4-5 toa mm., 
edges obtuse, very thin, denticulate, white or cream-colored to umbrinous or bay, chestnut- 
colored when bruised: spores ovoid, smooth, fulvous, truncate at the base, 8 x 5 yu. 
TYPE LOCALITY: Isthmus of Panama. 
Hapitat: Trunks of trees. 
DISTRIBUTION : Nicaragua and Panama. 
ILLUSTRATION: Bull. Soc. Myc. Fr. 17: pi. 8. 
72. AMAURODERMA Murrill, Bull. Torrey Club 32: 366. 1905. 
Hymenophore large, epixylous, stipitate, the stipe often much elongated; surface 
smooth, encrusted, not varnished: context pallid or brown, punky to fibrous; tubes cylin- 
drical, concolorous, the mouths usually light-colored at first: spores ovoid or globose, 
brown. 
Type species, Homes regulicolor Cooke. 
Pileus over 3 cm. broad; stipe over 5 mm. thick. 
Stipe lateral, ascending. 
Stipe less than 5 cm. long. 
Pileus 10 cm. or more broad; tubes 5 to a mm.; plants cespitose. 1. A. coffeatunt. 
Pileus 5 cm. or less broad ; tubes 8 to a mm. : plants simple, 2. A, regulicolor. 
Stipe 15 cm. long. 3. A. avellaneum, 
Stipe central, erect. 
Hymenium white to avellaneous; stipe 15 cm. long. 4. A, Chaperi. 
Hymenium rich yellow ; stipe less than 10 cm. long. 5. 4. flaviporum, 
Pileus 3 cm. or less in breadth ; stipe slender, less than g min. thick. 
Context bay. 6. A. renatum. 
Context wae to avellaneous. 
Stipe 2 cm. long; pileus orbicular, nodding. 7. A. nutans. 
Stipe 10 cm. long ; pileus reniform, erect. 8. A. subrenaiun., 
